Buy 456-0727 - Genuine CAT DEF Module Manifold - wisentpartscenter.com

Description

The 456-0727 Genuine CAT DEF Module Manifold is a diesel exhaust fluid manifold assembly used in select Caterpillar air inlet and exhaust aftertreatment systems. CAT identifies this part as a Diesel Exhaust Fluid Module Manifold with a 3-pin connector, stainless steel and nylon/plastic construction, and 0.21 L capacity. This manifold supports DEF system operation by helping manage diesel exhaust fluid routing, temperature control, and fluid-level-related functions within the SCR/aftertreatment system. Correct part matching is important because DEF module manifolds vary by machine model, emissions configuration, connector style, and aftertreatment layout. Verify fitment by CAT model, machine serial number, original part number, and CAT SIS/parts information before ordering.

Purpose of the Part

The 456-0727 DEF module manifold supports DEF handling within the SCR emissions system. It helps route DEF and supports system monitoring required for proper aftertreatment operation. If the manifold or connected DEF components fail, the system may detect incorrect fluid readings, leaks, or flow issues, which can lead to SCR warnings, performance reduction, or machine derate.

Issue Symptoms / When to Replace

Common signs that the CAT 456-0727 DEF Module Manifold may need inspection or replacement include:

  • DEF system warning light
  • SCR or aftertreatment-related fault
  • DEF leakage around the manifold or connected lines
  • Damaged, cracked, or contaminated manifold body
  • Corroded, loose, or damaged 3-pin connector
  • Incorrect DEF level, temperature, or system readings
  • Machine derate related to emissions-system operation

Fault codes vary by CAT machine, ECM, and aftertreatment configuration. Diagnose with CAT ET and refer to CAT SIS before replacement.

Brand Information

CAT is Caterpillar’s parts brand for equipment, engine, drivetrain, hydraulic, and aftertreatment components used across Caterpillar machines and industrial engine applications. Genuine CAT parts are built to match Caterpillar system requirements and service specifications. For DEF/SCR components, correct OEM fitment is important because connector type, fluid routing, sensor communication, and emissions-system operation must match the machine configuration.

Installation Notes

Install 456-0727 only after confirming the original part number and machine serial number. Inspect DEF lines, seals, coolant-related connections, electrical connector, and nearby aftertreatment components for leaks, contamination, or corrosion. Follow CAT SIS for torque specifications, DEF handling, system priming, leak testing, and final diagnostic verification.

How to Identify an OEM Part

A Genuine CAT 456-0727 DEF Module Manifold should be verified by the CAT part-number label, original CAT packaging, connector style, and molded or stamped identification on the component. Match the part to the original manifold and the part number shown in CAT SIS. Do not rely on visual appearance only, because aftermarket DEF manifolds may look similar but differ in connector, material, sensor configuration, or system compatibility.

Why buy from Wisent Parts
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    180-day warranty
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  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

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Warrany & Return Information

Warranty Information

Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help—whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.

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